The Effect of Polymer Blends on the In Vitro Release/Degradation and Pharmacokinetics of Moxidectin-Loaded PLGA Microspheres
文献类型： 外文期刊
作者： Zhang, Hongjuan 1 ; Yang, Zhen 1 ; Wu, Di 1 ; Hao, Baocheng 1 ; Liu, Yu 1 ; Wang, Xuehong 1 ; Pu, Wanxia 1 ; Yi, Yunpeng 1 ; Shang, Ruofeng 1 ; Wang, Shengyi 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Lanzhou Inst Husb & Pharmaceut Sci CAAS, Key Lab New Anim Drug Project, Gansu Prov Key Lab Vet Pharmaceut Dev, Lanzhou 730050, Peoples R China
2.Shandong Acad Agr Sci, Inst Poultry Sci, Shandong Prov Anim & Poultry Green Hlth Prod Creat, Jinan 250023, Peoples R China
关键词： PLGA microspheres; moxidectin; polymer blends; in vitro release; pharmacokinetics
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 19 期
页码：
收录情况： SCI
摘要： To investigate the effect of polymer blends on the in vitro release/degradation and pharmacokinetics of moxidectin-loaded PLGA microspheres (MOX-MS), four formulations (F1, F2, F3 and F4) were prepared using the O/W emulsion solvent evaporation method by blending high (75/25, 75 kDa) and low (50/50, 23 kDa) molecular weight PLGA with different ratios. The addition of low-molecular-weight PLGA did not change the release mechanism of microspheres, but sped up the drug release of microspheres and drastically shortened the lag phase. The in vitro degradation results show that the release of microspheres consisted of a combination of pore diffusion and erosion, and especially autocatalysis played an important role in this process. Furthermore, an accelerated release method was also developed to reduce the period for drug release testing within one month. The pharmacokinetic results demonstrated that MOX-MS could be released for at least 60 days with only a slight blood drug concentration fluctuation. In particular, F3 displayed the highest AUC and plasma concentration (AUC0-t = 596.53 ng/mL center dot d, Cave (day 30-day 60) = 8.84 ng/mL), making it the optimal formulation. Overall, these results indicate that using polymer blends could easily adjust hydrophobic drug release from microspheres and notably reduce the lag phase of microspheres.
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